I did'nt mean Ogre based necessarily. And I think NeoAxis is for general purpose, It should be adapted...
Im planning to make my own (ogre based) but if it exists already...probably I don't, that's why im asking.

Yep, it's there to be adapted. It seems suitable for your 2.5D requirements (it's pretty good at FPS/TPS/RTS stuff) Most licenced/open source game engines are generic -- otherwise they'd have a pretty slim audience.

Im planning to make my own (ogre based) but if it exists already...probably I don't, that's why im asking.

yep, but its general discussion, sorry if is not the right place anyway

Yep, it's there to be adapted. It seems suitable for your 2.5D requirements (it's pretty good at FPS/TPS/RTS stuff) Most licenced/open source game engines are generic -- otherwise they'd have a pretty slim audience.

Yep, but what if the very motivated guy interested in make his own resident evil game has very few programming experience and he prefer to focus on game-concept, game-art, etc..

It depends on what you mean by 2.5D
If you want a true 3d background:
Standard ogre level and models. Place the camera in a fixed position for each room.
If you want a 2d pre-rendered background:
Standard ogre models. Place the camera in a fixed position for each room. Use a textured quad as the background. To walk behind things, you might need some extra quads as layers to walk behind, or some static models, or a pre-generated depth buffer, etc.

Ogre can easily handle both styles, although it will require programmers.

2.5D (in terms of RE-clones) are 3D games with pre-rendered backgrounds. Remember PS1's Final Fantasy games? Those are more examples.

It's actually quite an easy feature to add. You just need two things:
- Place the background image (Rectangle2D class)
- Place very low level occluding models (things like boxes, pyramids...) with a special "matte" material (these are done by disabling colour_write)

I wanted to know if there was already something like that, ready to work on the game contents.
I checked the game engine list from wikipedia (the freeware ones) and it seems there is nothing exactly as I need so rather than adapting a general purpose one I rather build my own (using Ogre of course ), for educational purposes.